Porsche 911 GT3 Cup 2018 Techical Manual page 210

Brake disc wear limit:
The wear limit is reached when the disc has been worn down to the bottom of the slot
(figure 3.7.1.2). The disc should also be replaced if there are cracks up to the edge of
the disc that are caused by increased thermal stress.
Brake pad wear limit
WARNING
WARNING
NOTE
The wear limit is reached when the brake pad has been worn down to the bottom of
the slot (figure 3.7.1.3). In addition, the pads should also be replaced if excessive
diagonal wear is detected. In this case, the brake pistons of the caliper have to be
checked immediately to find out the cause.
Version: 4/20/2018
Installation of brake pads with the wrong brake pad
quality
Increased braking distance
Increased wear of brake pads
Only use the type-specific brake pads listed in the
•
Porsche spare parts catalog.
Replace the brake discs on each axle upon
•
reaching the wear limits.
Old mounting parts fitted on the brake caliper
Reduced braking effect
Damage to the brake caliper
Fit new pad retaining springs.
•
Fit new fastening screws.
•
Removing brake piston
Damage of piston seal
Clean the piston before they move back

Chassis
3.7.1.2
3.7.1.3
911 GT3 Cup (991 II)
MY 2018
209